カプセル流体輸送に関する基礎的研究 : 第3報,偏心のカプセルないし二重管における圧力損失

概要

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This paper presents the theoretical and experimental results obtained by the study of eccentric cylindrical capsule transportation. The flow in the annular section of a capsule can be approximated by the flow through double-circular pipes when the inner pipe moves. Then the general formula for the pressure loss due to friction drag in turbulent flow through double stationary pipes is derived by applying the idea of the one-seventh power law for axial velocity distribution, and the rational model for the analysis of eccentric annuli. Furthermore, by applying the results obtained in the study of concentric capsule flow, this formula is developed for the flow through double moving pipes. During the experimental part of the study, the validity of the formula is confirmed and the capsule velocity, as well as the total pressure loss which is established by friction drag and pressure drag, can be estimated with reasonable accuracy.
一般社団法人日本機械学会の論文
1986-03-25